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Proceedings Conference on Marine Engineering and its Application
Published by Politeknik Perkapalan Negeri Surabaya
ISSN : -     EISSN : 26553333     DOI : https://doi.org/10.33863/cmea.v6i1.2426
Core Subject : Engineering,
Engineering Mechanical Engineering
The Proceedings of Marine Engineering and Its Application (CMEA) is an open-access publication, allowing global access for readers to publish, read, download, cite, and share the content freely. CMEA focuses on the dissemination of original ideas, innovative research, and practical developments contributed by scientists and engineers from both academic and industrial backgrounds. The journal welcomes a wide range of submissions, including theses, research articles, and review papers, covering topics in mechanical engineering, marine engineering, and related fields.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 109 Documents
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STRATEGI PENJADWALAN PERAWATAN SISTEM PENDINGIN PADA KAPAL CARGO 3650 DWT M Sena Majid; Raden Dimas Endro; Nurvita Arumsari
Proceedings Conference on Marine Engineering and its Application Vol 6 No 1 (2023): Conference on Marine Engineering and its Aplication
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v6i1.2625

Abstract

This study aims to enhance the closed cooling system's reliability on the cargo 3650 dwtship by evaluating maintenance schedules. To achieve this, an effective maintenance program isnecessary. The Fault Tree Analysis (FTA) method is used to analyze potential component failures andidentify main causes. A total of 22 components are identified, including Main FW Cooler, AuxiliarySea Water Pump, Turbocharger, and others. All components are assessed to determine critical ones,included in the minimal cut set table, and relationships for a Reliability Block Diagram (RBD).Additionally, distribution types are determined to model time between component failures and predictsystem reliability. Reliability calculations are done for each component, and results measure overallsystem reliability. Turbocharger is the component with the shortest scheduling time, t=1650 hours, areference for maintenance. The final stage involves cost calculations to compare Corrective andPreventive Maintenance. Preventive maintenance analysis improves cost and time efficiency. Thus,implementing a maintenance program based on this research can enhance cooling system reliabilityon the 3650 dwt ship.
Kajian Eksperimen Pengaruh Variasi Jarak Stagger Silinder Di Depan .Returning Blade Turbin Angin Savonius Dengan Fin Type Myring N=1. Syahdan Firza Hendarto; Priyo Agus Setiawan; Daisy Dwijati Kumala
Proceedings Conference on Marine Engineering and its Application Vol 6 No 1 (2023): Conference on Marine Engineering and its Aplication
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v6i1.2626

Abstract

The Savonius wind turbines convert wind energy into electrical energy. Unfortunately,these turbines have lower performance than other types of turbines. In previous research, additiondisturbance cylinder in front of the returning blade with the addition of 1 fin on the blade has beenproven to increase the performance of the turbine. Although the increase not optimal. Based on aboveproblems, and experimental study was carried out placing the fins and the interfering cylinder at thesame place and time. This experiment uses a savonius turbine with n=1 myring type fins. Turbineblade height and diameter of 40 cm. Variation of interfering cylinder distance S/d = 1.4; 1.7; 2.0; and2,3. The test uses variations in wind speed of 5 m/s; 6m/s; and 7 m/s and carried out 12 times todetermine the effect of adding interfering cylinders and fins at the turbine blades to coefficient ofpower (Cp) and the coefficient of torque (Ct). The end result shows that the best performanceimprovement the savonius wind turbine occurs in variation the interfering cylinder distance ratio S/d= 1.4 at a wind speed of 6 m/s. The increase in the coefficient of torque.(Ct) is 15.01% and coefficientof power (Cp) is 89.95% for turbines without interfering cylinders.......
RANCANG ULANG SISTEM PENDINGIN PADA MESIN FREEZER MULTIFUNGSI Mukhamad Zidan N; George Endri Kusuma; Projek Priyonggo
Proceedings Conference on Marine Engineering and its Application Vol 6 No 1 (2023): Conference on Marine Engineering and its Aplication
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v6i1.2627

Abstract

Previous research was the beginning of the manufacture a multifunctional freezer, a machinethat has two functions for cooling and drying and is aimed at preserving fish both dried and cooled.The evaporator on the machine is used for cooling the fish in the refrigerator. The cooling process hasa weakness in the cooling system where the temperature in the chamber can’t reach a temperaturebelow 0°C when the load is given above 0,5kg, and its cooling rate is less efficient so that the processof temperature reduction in a chamber given the load variation has a long enough time, so it can beconcluded that the performance of the chiller is less optimal. In this final project, a cooling systemredesign is carried out on a multifunctional freezer machine, as well as a capillary tube with a diameterof 0,31 inches and a length of 1,5 meters. Test results were obtained with weight variations of 0,5kg,2kg, and 3kg. Average cooling speed of 0,255 kJ/s, chill room temperature of 2,7°C to -6°C, and thebest coefficient of performance are obtained from the test results at a weight of 3kg with a COP valueof 6,609 at 30 minutes and 5,133 at a test time of 60 minutes or 1 hour of operation of the multifunctionfreezer.
Pengaruh Penambahan Becker Mewis Duct pada Perfoma Propeller B-series Husnun Aska Nabilah; Burniadi Moballa; Benedicta Dian Alfanda
Proceedings Conference on Marine Engineering and its Application Vol 6 No 1 (2023): Conference on Marine Engineering and its Aplication
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v6i1.2628

Abstract

Pollution due to sea transportation is a problem that requires consistent handling. Recent years of research in the field of shipping have focused on reducing exhaust emissions by increasing fuel efficiency and decarbonization. Decarbonization in the shipping industry can be achieved by using energy saving devices to reduce fuel consumption. The Energy Saving Device commonly used in the shipping world is the Becker-Mewis duct (BMD). This study used a variation of the NACA profile on the Becker-Mewis duct fin. The CFD (Computational Fluid Dynamics) method is used to analyze the thrust coefficient and torque coefficient. Becker-Mewis duct was added to increase thrust and torque values. From the results of the analysis that has been carried out without variations from NACA, the thrust coefficient is 0.1526, the torque coefficient is 0.0162 and the efficiency is 0.5261. With the NACA 4412 variation, it has a thrust coefficient of 0.2579, a torque coefficient of 0.0252 and an efficiency of 0.5728. The NACA 4415 variation has a thrust coefficient of 0.2663, a torque coefficient of 0.0260 and an efficiency of 0.5743. With increased efficiency, the addition of Becker-Mewis duct can increase the performance of the propeller
Kajian Numerik Penerapan Organic Rankine Cycle sebagai Metode Energi Take-Off dari Penyimpanan Energi Termal Skala Jala-Jala Dwiyan Bagus Prayoga; Burniadi Moballa; Pranowo Sidi
Proceedings Conference on Marine Engineering and its Application Vol 6 No 1 (2023): Conference on Marine Engineering and its Aplication
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v6i1.2629

Abstract

Energy is a need that must be met in human life, if the population increases, the need for energywill also increase. A technology is needed to support human energy needs. Therefore, low temperature heatutilization is carried out using the Organic Rankine Cycle as an energy take off from a grid-scale thermalenergy storage in the form of sand media where the heat stored is heat wasted from the heat pump. After theprocess simulation is carried out, the best and feasible fluid to run the system from an ammonia heat pumpis N-Pentane with an efficiency of 7.074%. The storage medium is silica sand. The heat exchanger design onthe tube has an outer diameter of 60.3 mm for the ORC and 42.2 mm for the heat pump with an inner diameterof 54.8 mm for the ORC tube and 32.5 mm for the heat pump. The length of the heat exchanger design pipeis 165,57 m for the ORC and 479,23 m for the heat pump.
Perencanaan Main Engine dan Propeller pada Kapal Pencalang 15 GT Rama Kurniadhani Atmaja; Abdul Gafur; Bambang Antoko
Proceedings Conference on Marine Engineering and its Application Vol 6 No 1 (2023): Conference on Marine Engineering and its Aplication
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v6i1.2630

Abstract

Planning for the selection of the propulsion system on the Pencalang 15 GT ship is carriedout in order to avoid any errors in determining the main engine and propeller. Calculation ofresistance and ship engine power requirements is carried out using the Holtrop method in modelingsoftware to select the appropriate main engine. The propeller selection is carried out with theconsideration that it does not exceed the maximum diameter limit and the propeller does notexperience cavitation. Matching points are carried out by plotting engine power, engine speed andpropeller load characteristics in trial and service conditions with the highest percentage of matchingpoint values.
Kajian Numerik Penerapan Heat Pump sebagai Sarana Penyimpanan Energi Skala Jala-Jala dari Pembangkit Energi Terbarukan Refi Afrilia; Eko Julianto; Burniadi Moballa
Proceedings Conference on Marine Engineering and its Application Vol 6 No 1 (2023): Conference on Marine Engineering and its Aplication
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v6i1.2631

Abstract

Utilization of New Renewable Energy (EBT) today must be carried out because of its abundantpotential. One of the uses is to use energy storage with a heat pump system sourced from EBT. To supportthis, it is necessary to use a heat exchanger in an energy storage system which is expected to make theheating or cooling system faster with the right refrigerant. Therefore, a study was carried out using theapplication of a heat pump system with the addition of a heat exchanger as a place to store energyoriginating from Renewable Energy. The method used is process simulation using DWSIM. The refrigerantused is R-600a, R-407C. R-410a, R-22, and ammonia. Ammonia was chosen because it produces aCoefficient of Performance of 3.012 with a condenser outlet temperature of 102.854°C. The storagemedium used is silica sand.
Perbandingan Model Peluang Kegagalan Pada Sistem Pendingin Main engine Crew Boat 41 GT Tasya Putri Lindyawati; Nurvita Arumsari; Aminatus Sa'diyah
Proceedings Conference on Marine Engineering and its Application Vol 6 No 1 (2023): Conference on Marine Engineering and its Aplication
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v6i1.2632

Abstract

Damage to the main engine is currently common, some cases result in sailing delays or eventhreaten human safety. Crew boat 41 GT is a ship that operates to transport crew or support offshore. Thus, it is necessary to pay attention to the maintenance of the main engine, especially the cooling sub-system which plays an important role in maintaining the working temperature of the main engine so as not to overheat. Therefore, it is necessary to predict the failure of the 41 GT crew boat main enginecooling sub-system components so that the right time can be determined to carry out maintenance onthese components before damage occurs. In this study, the prediction of reliability value was carriedout using qualitative (FMEA) and quantitative (theoretical and Monte carlo simulation) methods.FMEA analysis resulted in 3 critical components, namely sea water pump, heat exchanger and freshwater pump. The results of quantitative analysis of 3 critical components at RLLM = 0.6 between thetwo methods are not much different and error calculations have been carried out with RMSE, MAPE,and MAE with results close to 0. So, it can be seen that the MCS method can be applied to predictreliability values.
KAJIAN EKSPERIMEN KINERJA TURBIN ANGIN SAVONIUS SUDU OVERLAP BERPROFIL MYRING n=1 DENGAN VARIASI SUDUT STAGGER SILINDER DI DEPAN SUDU RETURNING Aditya Yuta Prawiratama; Priyo Agus Setiawan; Emie Santoso
Proceedings Conference on Marine Engineering and its Application Vol 6 No 1 (2023): Conference on Marine Engineering and its Aplication
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v6i1.2633

Abstract

The previous Savonius wind turbine studies have proved that overlap modifications to conventional blades can improve turbine performance. With these conventional blades, the performance is less optimum because the drag force generated by turbine's rotation is still high. Based on this condition, this experiment is conducted by modifying Savonius wind turbine with overlap blades using Myring equation n = 1. Its blade profile is made half-elliptical to reduce drag force. Diameter and height of the turbine are 400 mm with 0.3 overlap ratio. The ratio of cylinder diameter (ds/D) is 0.4, and the ratio of cylinder center distance (S/d) is 1.7. Experiments are conducted by varying stagger angles of circular cylinder in front of returning blade i.e 45°, 50°, 55°, and 60°. Its wind speed variations are 5 m/s, 6 m/s, and 7 m/s. The final results show that the best performance improvement of the turbine occurs at 60° stagger angle and 6 m/s wind speed. The increase in torque coefficient is 4.95% and power coefficient is 20.16% to overlap Savonius wind turbine with myring n = 1 with no circular cylinder
Analisis Getaran Pondasi Pada Mesin Induk Akibat Penambahan Plat Kapal KMP Dharma Kartika VIII Abrian Wira Syaputra; Adi Wirawan Husodo; Heroe Poernomo
Proceedings Conference on Marine Engineering and its Application Vol 6 No 1 (2023): Conference on Marine Engineering and its Aplication
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v6i1.2634

Abstract

Vibration is a response from a mechanical system that occurs due to the excitation force given.Vibration on the Main Engine foundation is very influential on the construction. As in ro-ro ships thatexperience changes to the main engine, which in the end also requires the addition of plates on the mainengine foundation to fulfill the alignment value between the main engine and the gearbox. This FinalProject discusses the vibrations that occur in the ship's main engine foundation using mathematicalmodeling methods. Mathematical modeling is used to determine the system that works in a mathematicalstatement. Preliminary analysis conducted to determine the value of mathematical modeling. Thedeflection and stiffness values also affect the vibration response that occurs in the main enginefoundation. This mathematical modeling produces a vibration response in the form of a vibrationresponse equation and the resulting equation can produce a graph by entering the equation into theMatlab software. The vibration response graph uses two variations, namely at 85% RPM and 100% RPM.From the calculation results obtained amplitude values of 0.179 mm at 85% RPM and 0.199 mm at 100%RPM before adding the plate. And has an amplitude value of 0.172 mm at 85% RPM and 0.191 mm at100% RPM after adding the plate. According to the ABS the recommended displacement is below 1.0 mmand the probability of damage is above 2.0 mm. This shows that the vibrations that occur in this structureare permitted.

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